sensitive_character ='你好'#敏感词库
test_sentence=input('请输入一段话：')
for line in sensitive_character:   #遍历输入的字符是存在敏感词库中
    if line in test_sentence:    #判断是否包含敏感词
        test_sentence = test_sentence.replace(line,'*')
        print(test_sentence)